[SCM] libav/experimental: Fix direct and skip MB motion compensation in RV4: two conditions were incomplete and zeroing motion vectors was performed only on half of them.
siretart at users.alioth.debian.org
siretart at users.alioth.debian.org
Sun Jun 30 16:41:14 UTC 2013
The following commit has been merged in the experimental branch:
commit 923ed9748ce6cb91c1a25928efc746b6b77fccb7
Author: Kostya Shishkov <kostya.shishkov at gmail.com>
Date: Fri Mar 13 13:48:44 2009 +0000
Fix direct and skip MB motion compensation in RV4:
two conditions were incomplete and zeroing motion
vectors was performed only on half of them.
Originally committed as revision 17947 to svn://svn.ffmpeg.org/ffmpeg/trunk
diff --git a/libavcodec/rv34.c b/libavcodec/rv34.c
index c227707..ee10528 100644
--- a/libavcodec/rv34.c
+++ b/libavcodec/rv34.c
@@ -787,15 +787,16 @@ static int rv34_decode_mv(RV34DecContext *r, int block_type)
case RV34_MB_B_DIRECT:
//surprisingly, it uses motion scheme from next reference frame
next_bt = s->next_picture_ptr->mb_type[s->mb_x + s->mb_y * s->mb_stride];
- if(IS_INTRA(next_bt))
+ if(IS_INTRA(next_bt) || IS_SKIP(next_bt)){
fill_rectangle(s->current_picture_ptr->motion_val[0][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], 2, 2, s->b8_stride, 0, 4);
- else
+ fill_rectangle(s->current_picture_ptr->motion_val[1][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], 2, 2, s->b8_stride, 0, 4);
+ }else
for(j = 0; j < 2; j++)
for(i = 0; i < 2; i++)
for(k = 0; k < 2; k++)
for(l = 0; l < 2; l++)
s->current_picture_ptr->motion_val[l][mv_pos + i + j*s->b8_stride][k] = calc_add_mv(r, l, s->next_picture_ptr->motion_val[0][mv_pos + i + j*s->b8_stride][k]);
- if(IS_16X16(next_bt)) //we can use whole macroblock MC
+ if(!(IS_16X8(next_bt) || IS_8X16(next_bt) || IS_8X8(next_bt))) //we can use whole macroblock MC
rv34_mc_2mv(r, block_type);
else
rv34_mc_2mv_skip(r);
--
Libav/FFmpeg packaging
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